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《Chinese Journal of Analytical Chemistry》 1982-07
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Spectrophotometric Determination of Trace Selenium with Tris-(1,10-phenanthroline)-Iron after Separation by Hydride Generation

Ye Yingzhi Liu Shaoling (Department of Chemistry,Zhengzhou University)  
Selenium(Ⅳ)is reduced with KBH_4 to H_2S_e which is absorbed in tris-(1,10-phenanthrolile)-iron(Ⅲ)solution. A ferrous complex is formed by the reduction of H_2Se.The absorbance due to the complex is measured at 508 nm with molar absorption coefficient of 1. 87×10~4 for selenium. Beer's law is obeyed in the range 0 to 10 μg of Se(Ⅳ). The coefficient of variation of the method is 2-3%. In the generation of H_2Se the interferences of Cu~(2+)andFe~(3+)can be masked by adding K_4Fe(CN)_6. The method has been applied to analysis of samples of water and soil with satisfactory results.
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【Co-references】
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1 Tang Fulong Liu Shaojun (Department of Chemistry,Hangzhou University);Resin Suspension Spectrophotometry-Determination of Microgram Coba(?)t in Natural Waters[J];Chinese Journal of Analytical Chemistry;1982-04
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